Thalassoma hardwicke

Datasheet

General DescriptionThalassoma hardwicke, commonly known as the Sixbar wrasse, is a stunning fish species that showcases beauty both in its juvenile and adult forms. These fish, belonging to the Labridae family, exhibit a significant change in appearance as they mature. They are known for their rapid growth, often outgrowing typical aquarium sizes, and are commonly available in the trade market. Ranging in size up to 20.0 cm, Sixbar wrasses display a captivating coloration pattern.

Aquarium SuitabilityConsidered suitable for aquariums with caution, Thalassoma hardwicke demands a large tank, with a minimum capacity of around 800 liters once fully grown. Due to their potential aggressiveness towards smaller fish, snails, and crustaceans, careful consideration must be taken when selecting tankmates. Additionally, they are known jumpers, requiring secure tank lids to prevent escape.

Care and HardinessSixbar wrasses are classified as hardy marine species, thriving in a well-maintained aquarium environment. Regular feeding (approximately three times a day) is essential due to their high activity levels. While they do not necessarily require a sandy substrate, they are known to dig themselves into the sand at times.

Reef SuitabilityReef safe with caution, Thalassoma hardwicke can be housed in a reef aquarium; however, attention must be paid to their behavior towards other reef inhabitants. They have the potential to disturb small invertebrates present in the reef environment.

Aquarium SetupSetting up an aquarium for Sixbar wrasses involves providing ample swimming space due to their active nature. Incorporating hiding spots with live rocks is beneficial for them, as they seek refuge in these areas. Maintaining a varied diet that includes larger crustaceans, invertebrates, and zooplankton is crucial for their overall health.

BehaviourThese wrasses exhibit aggressive tendencies towards smaller tankmates and display a preference for feeding multiple times a day. They are known to contribute to maintaining tank cleanliness by removing parasites from other fish.

Feeding and DietThalassoma hardwicke thrives on a varied diet that includes larger crustaceans, small crustaceans, zooplankton, and other invertebrates. Meeting their dietary requirements is crucial for their overall well-being.

Habitat and DistributionFound in the Indo-Pacific region, Sixbar wrasses inhabit areas ranging from East Africa to the Line and Tuamoto Islands. They have a habitat extending from southern Japan to regions like the Lord Howe and Austral Islands.

DimorphismSixbar wrasses are hermaphroditic, capable of changing gender from female to male as needed. This characteristic is a unique aspect of their reproductive biology, allowing for adaptability in social structures.

Recommended DietLarger crustaceans, other invertebrates, small crustaceans, and zooplankton are some of the key components of a recommended diet for Thalassoma hardwicke.

Water ConditionsMaintaining stable water conditions with parameters like a pH of 8.1-8.4, a temperature range of 22.2-25.6°C, and a specific gravity of 1.020-1.025 is crucial for the well-being of Sixbar wrasses.